Vehicle-tire.



PATENTED MAY 19, 190s.

., To whoni it may concern:

UNITED -OFFICEv EDWIN B. oA'DwELI., or DETROIT, MICHIGAN, AssIeNoR Or ONE-THIRD To FRANK JOHNSTON AAND ONE-THIRD To FRANK M. ASHLEY.'

vEHrcLEJrmE Specication of Letters .'Patent.

Patented :tay 1e, 190e.

IApplication led Hay 6, 1906.' Serial No. 258,953.

Be it known that I, EDWIN B. CADWELL, a citizen of the United Statesl residin atNo. 789 Cass avenue, Detroit, Michigan, have invented certain new and useful Im rovements in Vehicle-Tires, of which the fo lowing is a specification.

My Invention pertains to tires for vehicles and particularly to that class known as cushiongtires of this character, which will be strong, durable and resilient, 'and will present an unbroken tread surface.

. Referring to the drawings which form p art of this specification,-

-Figux'e 1, is a longitudinal view of a section of my tire, showing recesses formed in its sides, and cells formed in its base, indicated" by dotted lines. Fig. 2is a cross section of the same construction as shown in. Fig. 1. 3, is a plan view of a,modied construction, which shows' a different arrangement ofthe recesses. Fig. 4, is aplan view of the tire, as shown in Fig. 1. Fig. 5, is alcross-sectional view of the tire, as shown in' Eig. 3. Fig. 6, is a longitudinal view of the same.

A A'. indicates the tire as a whole. B the recesses therein. C the cells therein. Dv the binding wires; E the base of the tire. F tread of the same.

The tire is referabl constructed of soft vulcanized rubber, an the arrangement of the cells and the recesses are such, that the rubber, when under com ression due to the loadv of the'vehicle, will ow evenly into the said cells and recesses, and thus impart the qualities termed cushioning.

when tires are made from solid rubber, the rubber when under compression, can iiow butA in two directions, namely; in the lon itudinal direction of the tire and lateral y. This bein the case, it will be seen at once thatjthe ow of the rubben in the longitudinaldirection would-be -very short for the reason, that it would be lowing in a direction tending to compress the rubber in a direct l ,linegof the tread of the tire, and therefore mdst`of` the rubber tends to flow laterally;

' since rubber cannot be compressed but mu t flow by displacement, rit is easy to see that a tire com sed of a solid section mi ht easilyT be force eyond the elastic limit OI the rubber, and thereby permanently weaken the same. I

In thepresent invention the spacing of the l recesses and cells is such that the rubber may, yflow evenly in all directions from the line of compression; and thereby prevent excessive strains, whichwould cause rapid 'disintegra-l tion and destruction of the tires.

In Iny applicationiled March 24th, 1904, Serial #199,676.1 show cells and recesses formed in the tire as shown in the present drawings, butl in said prior forms I do not show an unbrekentread surface. In the c5 present case I secure many of the advantages 1 of the tire set forth in the above named'ap- 'plicationand some distinct advantages du to reserving the tread of the section in unbro en continuity.

shape and lextending from the sides across the center of the The recesses on one side alternate throughout the length of the tire with the recesses on the opposite side practically sealed when said tire is placed in the metal channel piece usuall on'the felly of the wheel, and inte-Which t e base of the tire fits, and thereby the chambersso made. are filled with air which give to the tire pneumatic properties. b

In F1 s. 5 and 6 the recesses do not extend across t e center of the tire but are op osite each other, and form thereby a centra web section, which extends from the base of the tire to the tread surface forming an unbroken web between these cells and recesses'this` form is provided for the driving wheels of a vehicle, such as the driving wheels of an automobile, for the reason that the longitudinal strength of the tire is thereby strengthened.

The binding wires D are arranged as shown, one of them on eachside of the tire and one extending at the` center of the tire longitudinally through the solid portion of the rubber, and are united at the ends in the 10.0

usual mannerwell known to the art, when tlietire is fitted in the channel' piece. f

'-It is obvious from the foregoing that the y recesses B may be formed to alternate as shown in F ig. 1 and. at the same tifrne may 105 only extend into theY tire the distance as shown in Fig.v 5 withoutdeparting from the spirit of the mvention.- B maintaining the tread section unbroken, 1y revent the tire 'from collecting dirt, grave and mud and 119 70 In 1 I vshow the krecesses fo'rmedjV throwing same when the vehicle is moving rapidly, which is objectionable. lt is also obvious thatthese tires may be formed of separate sections as indicated by the line Flg. 3 and held in lace in the channel piece by the binding wires D,'whei"eby if a section becomes injure-d, it could beremovcd from the tire .and re laced with a new one.

vextend. toward the center of its tread, said recesses being staggered in relation to each other, in coinbination'with cells m its base,

l and presenting an unbroken tread surface,

substantially as described. 4 l

3. A tire -havin recesses in its sides V sha e in form, an 1vconstructed tocontract un er tread pressure in combination with 'tion' to veach other, and

cells in its base, land presenting an unbroken tread surface substantially as described.

4.- A tire having recesses' in .its sides V sha e in form and constructed to contractun er tread pressure, and in staggered relaresenting an unbroken tread.l surface, su )stantially as described. f

5. 'A tire having recesses in its sides exs tending toward the center' of the tread, cells in its base o'n each side of the center of the tire, and binding wires for the tire, said tire presenting an unbroken tread surface, sub` stantially as described.

6. A. 're composed of separate sections, each section having recesses in its sides and cells in its base, and presenting an unbroken tread surface, substantially as described.

-7. A tire having recesses in its sides ex# tending and contracting toward the center of the tread, said recesses being spaced from each other less than the width of the tire, and said tire presenting an unbroken tread surface, substantially as described.

8. A tire composed of lseparate sections,

each section having recesses in its sides, cells in its base, and means whereby the sections may besecured tothe rim of the wheel, each presenting an unbroken tread surface, substantially as described.

9. A tire having recesses in each' of its sicles extending and contracting toward the center of the tread and spaced longitudinally t 'ssi/,ser

thereof and located below the` tread surface, substantially as described.

1'0. A tire having recesses in its sides einv tending and contracting toward the center of its tread and located below the tread surface thereof, and s aced from each other at a distance less t an the width of a tire, substantially as described; K

11. A tire having V shape recesses in its isides extending and contracting toward the center of its tread and located below thefhvb tread surface thereof, and spaced from each 'so ce ofthe tire beunder tread pressure, said tire pi'escnting`?'aI't unbroken tread surface substantially as' shown. I

14. A tire havin a plurality of recesses in l l `90' each of its sides w iiclr extend less than the width of the tire and are adapted to contia'ct under trend iressurc,said tire having an unbroken trearf surfacesubstantially as shown.

l5. A tire having recesses ini' ts sides which extend less than thc-width of the tire and contract in area as they recede fromA` the sur-- face Yand spaced froin each other longitudinelly.

16. extend less than the width of the tire and contract in arca iis they recede from the surface andadapted tov contract under tread pressure, cells in vthe base thereof, and piesenting an iinbroken'trciul surface.

17. A tire having recesses in its sides extending toward the cdnter ofD the tread and spaced apart longitudinally v4thereof,'cclls in 'l5 i l A tire having recesses iii-its sides which its base extending from the base toward the tread and located between said recesses, the tread surface of the tire above saidrcccsses being unbroken. y In testimony whereof, l, EDWIN B. CAD- wnLi'., have signed viny name to this specification in the presence of two subscribing witnesscs, this tenth day of April, 1905.

, I ICDWlN B. (/'ADWELL I Witnesses:

h1. C. ltlILLizn,

il. M. Jonsson'. 

